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Finding the Fourth Proportional to 2,618.64, 3,932.94 and 2,249.28

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Solution

The fourth proportional to 2,618.64, 3,932.94 and 2,249.28 is: 3,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.64 : 3,932.94 = 2,249.28 : x
  2. Step 2: Convert to fraction form
    2,618.64/3,932.94 = 2,249.28/x
  3. Step 3: Cross multiply
    2,618.64x = 3,932.94 × 2,249.28
  4. Step 4: Simplify right side
    2,618.64x = 8,846,283.28
  5. Step 5: Solve for x
    x = 8,846,283.28/2,618.64
  6. Step 6: Final answer
    x = 3,378.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.